Propylene ethylene polymers
US6525157B2 · kind B2 · utility
306Cited by
8References
61Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 2001 |
| Grant date | Feb 25, 2003 |
| Priority date | — |
| Expiry date | May 31, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2314/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Ethylene propylene copolymers, substantially free of diene, are described. The copolymers will have a uniform distribution of both tacticity and comonomer between copolymer chains. Further, the copolymers will exhibit a statistically insignificant intramolecular difference of tacticity. The copolymers are made in the presence of a metallocene catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.